21013013330131 has 8 divisors (see below), whose sum is σ = 21041535656000. Its totient is φ = 20984492448000.

The previous prime is 21013013330123. The next prime is 21013013330191. The reversal of 21013013330131 is 13103331031012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21013013330131 - 2³ = 21013013330123 is a prime.

It is a super-2 number, since 2×21013013330131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21013013330191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30562915 + ... + 31242883.

It is an arithmetic number, because the mean of its divisors is an integer number (2630191957000).

Almost surely, 2^{21013013330131} is an apocalyptic number.

21013013330131 is a deficient number, since it is larger than the sum of its proper divisors (28522325869).

21013013330131 is an equidigital number, since it uses as much as digits as its factorization.

21013013330131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721869.

The product of its (nonzero) digits is 486, while the sum is 22.

Adding to 21013013330131 its reverse (13103331031012), we get a palindrome (34116344361143).

The spelling of 21013013330131 in words is "twenty-one trillion, thirteen billion, thirteen million, three hundred thirty thousand, one hundred thirty-one".